For a 2-gram, 32-megabyte memory chip and its plastic package, about 32 kilograms of water is used (Williams, et al, 2002).

http://www.enviroliteracy.org/article.php/1275.htm

references

Williams, Eric, Robert Ayres, and Miriam Heller. The 1.7 Kilogram Microchip: Energy and Material Use in the Production of Semiconductor Devices. Environmental Science and Technology, 36 (24), 5504 -5510, 2002.